Ruger #1 Barrel Issues

[EDG]

Toolmaker
You might troll the posts at the ASSRA site for .40-70 SS articles.
When I bored the Hepburn the only possible brass was the 9.3X74R brass. That brass has a thin rim so it was a little sloppy in the Remington.
Today we have Hornady .405 brass when you can find it. It has a fine heavy duty rim. I consider it better than the metric brass. It does require a deeper rim recess than original .40-70 SS brass.
Boring the chamber was not very difficult other than the potential of destroying an unreplaceable original barrel.

[Toolmaker TN]

Toolmaker
You might troll the posts at the ASSRA site for .40-70 SS articles.
When I bored the Hepburn the only possible brass was the 9.3X74R brass. That brass has a thin rim so it was a little sloppy in the Remington.
Today we have Hornady .405 brass when you can find it. It has a fine heavy duty rim. I consider it better than the metric brass. It does require a deeper rim recess than original .40-70 SS brass.
Boring the chamber was not very difficult other than the potential of destroying an unreplaceable original barrel.

Yes, have looked at the 405 brass, but you're right, can be a little hard to find. Since I would be chambering a new barrel, rim wouldn't be an issue one way or another. I've seen where BA has brass made from 30-40 I think. Should be good stuff though.
Thanks for the ASSRA tip too. Was a member in the past, need to be again.